Microarteriovenous Malformations

Neurosurg Clin N Am. 1999 Jul;10(3):485-501.


Microarteriovenous malformations (micro-AVMs) are a subgroup of brain AVM with a nidus diameter of less than 1 cm. Although many micro-AVMs may appear angiographically occult on cursory review, careful analysis will often reveal a subtle diagnostic feature. Micro-AVMs present with intracranial hemorrhages that are generally large and associated with significant neurologic impairment. An awareness of these lesions as a possible source of hemorrhage in a young person is critical. In general, micro-AVMs are eminently resectable lesions and patient outcome is determined primarily by the hemorrhage that brings them to medical attention.

Publication types

  • Review

MeSH terms

  • Cerebral Angiography
  • Cerebral Hemorrhage / etiology
  • Humans
  • Intracranial Arteriovenous Malformations* / complications
  • Intracranial Arteriovenous Malformations* / diagnosis
  • Intracranial Arteriovenous Malformations* / surgery
  • Treatment Outcome